<template>
  <div class="app-container">
    <el-table
      :data="list"
      style="width: 100%"
      row-key="id"
      border
      lazy
      :load="load"
      :tree-props="{ children: 'children' }"
    >
      <el-table-column prop="name" label="名称" width="150"> </el-table-column>

      <el-table-column prop="dictCode" label="编码" width="150">
      </el-table-column>

      <el-table-column prop="value" label="值" width="150"> </el-table-column>

      <el-table-column prop="createTime" label="创建时间"> </el-table-column>
    </el-table>

    <el-button type="primary" @click="importData"
      ><i class="fa fa-plus" /> 导入</el-button
    >

    <el-button type="primary" @click="exportData"
      ><i class="fa fa-plus" /> 导出</el-button
    >

    <el-dialog title="导入" :visible.sync="dialogImportVisible" width="480px">
      <el-form label-position="right" label-width="170px">
        <el-form-item label="文件">
          <el-upload
            :multiple="false"
            :on-success="onUploadSuccess"
            :action="'http://localhost:8202/admin/cmn/dict/importData'"
            class="upload-demo"
          >
            <el-button size="small" type="primary">点击上传</el-button>
            <div slot="tip" class="el-upload__tip">
              只能上传xls文件，且不超过500kb
            </div>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogImportVisible = false">取消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import cmn from "@/api/cmn";

export default {
  data() {
    return {
      dialogImportVisible: false, //弹出层是否显示
      list: [], //数据列表
    };
  },
  created() {
    //刚打开页面,加载第一层数据
    this.fetchData(1);
  },
  methods: {

    //上传文件的回调
    onUploadSuccess(response,file){
        if(response.code==20000){
            this.$message.success("上传成功");
            //隐藏弹出层
      this.dialogImportVisible = false;
      //重新加载数据
      this.fetchData(1);
        }else{
            this.$message.error(response.message);
        }
    },
    //导出excale 文件
    importData() {
      //显示弹出层
      this.dialogImportVisible = true;
    },

    //导出excale 文件

    exportData() {
      //打开新的标签页
      window.open("http://localhost:8202/admin/cmn/dict/exportData");
    },
    //展开子数据

    load(tree, treeNode, resolve) {
      this.fetchData(tree.id).then((response) => {
        //存入子数据
        resolve = response.data.list;
      });
    },
    //查询数据
    fetchData(parentId) {
      cmn.getChildren(parentId).then((response) => {
        this.list = response.data.list;
      });
    },
  },
};
</script>
